Burglar-alarm



(No Model.)

L. B. BATTIN. BURGLAR ALARM.

No. 429,001'. Patented May Z7, 1890.

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UNITED STATES PATENT OFFICE.

LAMBERT B. BATTIN, OF ELIZABETH, NEW JERSEY.

SPECIFICATION forming part of Letters Patent No. 429,001, dated May 27,1890.

Application filed December 12, 1889. Serial No. 333,438. (No model.)

To all whom t may concern.-

Be it known that I, LAMBERT B. BATTIN, of Elizabeth, in the county ofUnion and State of New Jersey, have invented certain new and usefulImprovements in Burglar-Alarms, of which the following is aspecification.

My invention consists of a detachable and adjustable alarm which may besecured to a door or` door-knob, orto a window or windowsash, in such amanner that if the door or sash or any part thereof is moved or shiftedthe alarm will be immediately given.

Referring to the accompanying drawings, which form a part of thisspecifieation, Eigure I represents my improved device attached to adoor-knob, as will be hereinafter eX- plained. Fig. II shows the saineconstruction applied in a sligl'itly-different way to a window-sash.

In the drawings, A represents a forkshaped piece of wood or metal orother suitable inaterial, and is provided with a screwbolt B, whichextends through the fingers of the fork, locking them together againstthe knob-shank C of the knob D. The top of the fork A is provided with aflat space which is adapted to occupy a horizontal position when inplace, and on this seat rests a detachable bell or alarm E, which, whenthe knob D is turned, will, by reason of the tipping of the fork A, dropupon the iioor and give an alarm. The bell F is provided with a flatportion G,

which corresponds with the seating upon the top of the fork A, and byreason of this construction the parts will be retained in their normaloperative positions as long as they remain at rest; but when, asaforesaid, the knob-handle is turned the bell will ring as soon as it isthrown from its seat on the top of the fork. The same constructiondifferently adapted'and employed is shown in Fig. II, where the fork Ais attached by means of a screw-bolt B or by other suitable means to thewindow-frame H. As will be seen by referring to this drawing, the saidfork is attached to the frame at or near the top of the lower sash insuoli a position that the bell which sets inwardly toward the sash, soas to extend slightly over it, will be thrown from its seat to the floorwhen the sash is raised.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

A support for burglaralarms, consisting' of a fork-shaped body having abolt passing through its fingers for attaching it to the shank of aknob, and a plane seat onits upper or head end, on which a bell or otherarticle of alarm may be placed, substantially as herein set forth.

LAMBERT B. BATTIN. lVitnesses:

GEO. M. Row, L. B. BARRows.

